Pitney Bowes MapMarker USA - Manual (Page 53)

Chapter 3:
Understanding the Geocoding Process
MapMarker USA 25
53
User Guide
Understanding the Geocoding Process
MapMarker is based on a model of relative matching that is governed by a set of weights that scores
each portion of the address against candidate records (possible matches) in the Address Dictionary.
The resulting scores are summed and the candidate’s total score is used to determine the best
match or matches. An exact match is made when a candidate scores well above other candidates. If
there is no clear best match, several (non-close) candidates may be returned.
If a record is not geocoded, you can still attempt to match that record during interactive geocoding
where you can pick what you consider the best match from a list of candidates.
The basic MapMarker workflow is to open your MapInfo Table or other input file, specify which
columns contain address information, and then geocode your records. MapMarker automatically
matches your records to those in its Address Dictionary, determines if there is a match, and assigns
the geographic coordinates.
The following topics provide an overview of the supported file formats, basic steps, input, and
expected output.
Subsequent topics in this chapter provide more detail.
• Supported File Formats on page 54
• Geocoding Flexibility and Trade-offs on page 54
result code MapMarker returns a result code (georesult) for each record it
attempts to match. These codes allow you to determine the
success and precision of the geocoding match. Result codes begin
with either an S (street level geocode), Z (postal level geocode) or
G (geographic level geocode. Result codes are described in more
detail in
Result Codes .
street level geocoding Candidate coordinates are interpolated along a street segment.
This is a highly accurate level of geocoding.
Suite Link® Suite Link® is the USPS® business name database that provides
suite numbers for businesses located in high-rise buildings. This
allows delivery sequencing where it would not otherwise be
available.
user dictionary A customized search dictionary of addresses and coordinates that
can be used in place of, or in addition to, the application’s address
dictionary.
ZIP Code™ The system of numeric codes that identifies the individual post
office or metropolitan area delivery station associated with an
address.
Geocoding Terminology (continued)
Term Definition